[ 
https://issues.apache.org/jira/browse/FLINK-3871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15712647#comment-15712647
 ] 

ASF GitHub Bot commented on FLINK-3871:
---------------------------------------

Github user mushketyk commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2762#discussion_r90504878
  
    --- Diff: 
flink-streaming-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/connectors/kafka/KafkaAvroTableSource.java
 ---
    @@ -0,0 +1,84 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.flink.streaming.connectors.kafka;
    +
    +import org.apache.flink.api.common.typeinfo.TypeInformation;
    +import org.apache.flink.api.table.sources.StreamTableSource;
    +import org.apache.flink.streaming.connectors.kafka.internals.TypeUtil;
    +import 
org.apache.flink.streaming.util.serialization.AvroRowDeserializationSchema;
    +import org.apache.flink.streaming.util.serialization.DeserializationSchema;
    +
    +import java.util.Properties;
    +
    +/**
    + * A version-agnostic Kafka Avro {@link StreamTableSource}.
    + *
    + * <p>The version-specific Kafka consumers need to extend this class and
    + * override {@link #getKafkaConsumer(String, Properties, 
DeserializationSchema)}}.
    + *
    + * <p>The field names are used to parse the Avro file and so are the types.
    + */
    +public abstract class KafkaAvroTableSource extends KafkaTableSource {
    +
    +   /**
    +    * Creates a generic Kafka Avro {@link StreamTableSource}.
    +    *
    +    * @param topic      Kafka topic to consume.
    +    * @param properties Properties for the Kafka consumer.
    +    * @param fieldNames Row field names.
    +    * @param fieldTypes Row field types.
    +    */
    +   KafkaAvroTableSource(
    +           String topic,
    +           Properties properties,
    +           String[] fieldNames,
    +           Class<?>[] fieldTypes) {
    +
    +           super(topic, properties, 
createDeserializationSchema(fieldTypes), fieldNames, fieldTypes);
    +   }
    +
    +   /**
    +    * Creates a generic Kafka Avro {@link StreamTableSource}.
    +    *
    +    * @param topic      Kafka topic to consume.
    +    * @param properties Properties for the Kafka consumer.
    +    * @param fieldNames Row field names.
    +    * @param fieldTypes Row field types.
    +    */
    +   KafkaAvroTableSource(
    +           String topic,
    +           Properties properties,
    +           String[] fieldNames,
    +           TypeInformation<?>[] fieldTypes) {
    +
    +           super(topic, properties, 
createDeserializationSchema(fieldTypes), fieldNames, fieldTypes);
    +   }
    +
    +   private static AvroRowDeserializationSchema createDeserializationSchema(
    +           TypeInformation<?>[] fieldTypes) {
    +
    +           return new AvroRowDeserializationSchema(new String[]{"f1", 
"f2", "f3"}, fieldTypes);
    +   }
    +
    +   private static AvroRowDeserializationSchema createDeserializationSchema(
    +           Class<?>[] fieldTypes) {
    +
    +           return new AvroRowDeserializationSchema(new String[]{"f1", 
"f2", "f3"}, TypeUtil.toTypeInfo(fieldTypes));
    --- End diff --
    
    Ditto. 


> Add Kafka TableSource with Avro serialization
> ---------------------------------------------
>
>                 Key: FLINK-3871
>                 URL: https://issues.apache.org/jira/browse/FLINK-3871
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API & SQL
>            Reporter: Fabian Hueske
>
> Add a Kafka TableSource which supports Avro serialized data.



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